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Improvement in the thermoelectric properties of CaMnO perovskites by W doping

Journal of Materials Science, ISSN: 1573-4803, Vol: 49, Issue: 21, Page: 7522-7528
2014
  • 65
    Citations
  • 0
    Usage
  • 68
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    65
    • Citation Indexes
      65
  • Captures
    68

Article Description

Perovskite manganites CaMn W O (0 ≤ y ≤ 0.05) were synthesized using solid-state reaction technique. The influence of W doping on the structure, charge carrier transports and phonon scattering of CaMnO was investigated. Doping was found to increase the carrier concentration, leading to enhanced electrical conductivity and decreased Seebeck coefficient. In addition, it decreased the thermal conductivity of CaMnO, which was believed to associate with decreased phonon mean path and doping-induced MnO octahedral distortion, as evidenced by the increased orthorhombicity. A twofold increase of figure of merit (ZT) of 0.15 at 973 K was observed in CaMnW O, compared with the undoped CaMnO. © 2014 Springer Science+Business Media New York.

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